Biodiversity and the Environment

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Across
  1. 4. | The complete disappearance of a species from Earth.
  2. 7. | The surroundings or conditions in which a person, animal, or plant lives.
  3. 9. | The plant life of a particular region or period.
  4. 12. | The introduction of harmful substances into the environment.
  5. 14. | The process by which different kinds of living organisms have developed and diversified from earlier forms.
  6. 16. | The study of heredity and variation in organisms.
  7. 17. | The way different organisms rely on each other for survival.
  8. 18. | The protection and management of natural resources and biodiversity.
  9. 20. | A large naturally occurring community of flora and fauna occupying a major habitat, e.g. forest or desert.
Down
  1. 1. | The process by which organisms adjust to their environment to survive.
  2. 2. | The natural home or environment of an organism.
  3. 3. | A community of living organisms interacting with their non-living environment.
  4. 5. | Existing in or caused by nature, not made or caused by humankind.
  5. 6. | Maintaining something in its original or existing state, especially natural areas.
  6. 8. and the Environment
  7. 9. | The animal life of a particular region, habitat, or geological period.
  8. 10. | A species at risk of becoming extinct.
  9. 11. | A group of similar organisms capable of breeding and producing fertile offspring.
  10. 13. | The variety of different species and ecosystems in a specific area.
  11. 15. | Returning an ecosystem or habitat to its original condition.
  12. 19. | The average weather conditions of an area over a long period of time.